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<div class="title">VIA6522.h</div>  </div>
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<a href="_v_i_a6522_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">  Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - &lt;http://www.fabgl.com&gt;</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">  Copyright (c) 2019-2021 Fabrizio Di Vittorio.</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">  All rights reserved.</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">* Please contact fdivitto2013@gmail.com if you need a commercial license.</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">* This library and related software is available under GPL v3.</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">  FabGL is free software: you can redistribute it and/or modify</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">  it under the terms of the GNU General Public License as published by</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">  the Free Software Foundation, either version 3 of the License, or</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">  (at your option) any later version.</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">  FabGL is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">  but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">  GNU General Public License for more details.</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">  You should have received a copy of the GNU General Public License</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment">  along with FabGL.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#pragma once</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor">#include &lt;stdlib.h&gt;</span></div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="preprocessor">#include &lt;stdint.h&gt;</span></div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="fabgl_8h.html">fabgl.h</a>&quot;</span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="preprocessor">#define DEBUG6522 0</span></div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacefabgl.html">fabgl</a> {</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment">// VIA (6522 - Versatile Interface Adapter)</span></div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment">// VIA registers</span></div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="preprocessor">#define VIA_REG_ORB_IRB         0x0</span></div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="preprocessor">#define VIA_REG_ORA_IRA         0x1</span></div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="preprocessor">#define VIA_REG_DDRB            0x2</span></div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="preprocessor">#define VIA_REG_DDRA            0x3</span></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="preprocessor">#define VIA_REG_T1_C_LO         0x4</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="preprocessor">#define VIA_REG_T1_C_HI         0x5</span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="preprocessor">#define VIA_REG_T1_L_LO         0x6</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="preprocessor">#define VIA_REG_T1_L_HI         0x7</span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="preprocessor">#define VIA_REG_T2_C_LO         0x8</span></div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="preprocessor">#define VIA_REG_T2_C_HI         0x9</span></div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="preprocessor">#define VIA_REG_SR              0xa</span></div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="preprocessor">#define VIA_REG_ACR             0xb   // Auxiliary Control Register</span></div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="preprocessor">#define VIA_REG_PCR             0xc   // Peripherical Control Register</span></div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="preprocessor">#define VIA_REG_IFR             0xd   // Interrupt Flag Register</span></div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="preprocessor">#define VIA_REG_IER             0xe   // Interrupt Enable Register</span></div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="preprocessor">#define VIA_REG_ORA_IRA_NH      0xf</span></div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="comment">// IER: VIA interrupt enable/disable bit mask</span></div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="preprocessor">#define VIA_IER_CA2             0x01</span></div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="preprocessor">#define VIA_IER_CA1             0x02</span></div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="preprocessor">#define VIA_IER_SR              0x04</span></div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="preprocessor">#define VIA_IER_CB2             0x08</span></div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="preprocessor">#define VIA_IER_CB1             0x10</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="preprocessor">#define VIA_IER_T2              0x20</span></div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;<span class="preprocessor">#define VIA_IER_T1              0x40</span></div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="preprocessor">#define VIA_IER_CTRL            0x80  // 0 = Logic 1 in bits 0-6 disables the corresponding interrupt, 1 = Logic 1 in bits 0-6 enables the corresponding interrupt</span></div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment">// VIA, ACR flags</span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="preprocessor">#define VIA_ACR_T2_COUNTPULSES  0x20</span></div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="preprocessor">#define VIA_ACR_T1_FREERUN      0x40</span></div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="preprocessor">#define VIA_ACR_T1_OUTENABLE    0x80</span></div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;</div><div class="line"><a name="l00091"></a><span class="lineno"><a class="line" href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#ga69838990f93c3301289776790e4fc0e0">   91</a></span>&#160;<span class="keyword">enum class</span> <a class="code" href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#ga69838990f93c3301289776790e4fc0e0">VIA6522Port</a> {</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;  <a class="code" href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#gga69838990f93c3301289776790e4fc0e0a06f6a489209115c5cef3f45036aad3ec">PA</a>,  </div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;  <a class="code" href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#gga69838990f93c3301289776790e4fc0e0acd203ccd68b84de1c5df8fd890e104e0">PB</a>,  </div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;  <a class="code" href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#gga69838990f93c3301289776790e4fc0e0ac93bf9a243a391a65da5b60116ee9a5c">CA1</a>, </div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;  <a class="code" href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#gga69838990f93c3301289776790e4fc0e0a3702f3bfbd91df0d6105cbd8b8d8b963">CA2</a>, </div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;  <a class="code" href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#gga69838990f93c3301289776790e4fc0e0ac479bbda96996453098aaa0687a9197e">CB1</a>, </div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;  <a class="code" href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#gga69838990f93c3301289776790e4fc0e0a96d495d6079a5d50e1b6bc3fc9255f09">CB2</a>, </div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;};</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="preprocessor">#if DEBUG6522</span></div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> * VIAREG2STR[] = { <span class="stringliteral">&quot;ORB_IRB&quot;</span>, <span class="stringliteral">&quot;ORA_IRA&quot;</span>, <span class="stringliteral">&quot;DDRB&quot;</span>, <span class="stringliteral">&quot;DDRA&quot;</span>, <span class="stringliteral">&quot;T1_C_LO&quot;</span>, <span class="stringliteral">&quot;T1_C_HI&quot;</span>, <span class="stringliteral">&quot;T1_L_LO&quot;</span>, <span class="stringliteral">&quot;T1_L_HI&quot;</span>, <span class="stringliteral">&quot;T2_C_LO&quot;</span>, <span class="stringliteral">&quot;T2_C_HI&quot;</span>, <span class="stringliteral">&quot;SR&quot;</span>, <span class="stringliteral">&quot;ACR&quot;</span>, <span class="stringliteral">&quot;PCR&quot;</span>, <span class="stringliteral">&quot;IFR&quot;</span>, <span class="stringliteral">&quot;IER&quot;</span>, <span class="stringliteral">&quot;ORA_IRA_NH&quot;</span> };</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div><div class="line"><a name="l00109"></a><span class="lineno"><a class="line" href="classfabgl_1_1_v_i_a6522.html">  109</a></span>&#160;<span class="keyword">class </span><a class="code" href="classfabgl_1_1_v_i_a6522.html">VIA6522</a> {</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;  <span class="comment">// callbacks</span></div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;  <span class="keyword">typedef</span> void (*PortOutputCallback)(<span class="keywordtype">void</span> * context, <a class="code" href="classfabgl_1_1_v_i_a6522.html">VIA6522</a> * via, <a class="code" href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#ga69838990f93c3301289776790e4fc0e0">VIA6522Port</a> port);</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;  <span class="keyword">typedef</span> void (*PortInputCallback)(<span class="keywordtype">void</span> * context, <a class="code" href="classfabgl_1_1_v_i_a6522.html">VIA6522</a> * via, <a class="code" href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#ga69838990f93c3301289776790e4fc0e0">VIA6522Port</a> port);</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;  <a class="code" href="classfabgl_1_1_v_i_a6522.html">VIA6522</a>(<span class="keywordtype">int</span> tag);</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;  <span class="keywordtype">void</span> setCallbacks(<span class="keywordtype">void</span> * context, PortInputCallback portIn, PortOutputCallback portOut) {</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    m_context = context;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;    m_portIn  = portIn;</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    m_portOut = portOut;</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;  }</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;  <span class="keywordtype">void</span> reset();</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;  <span class="keywordtype">void</span> writeReg(<span class="keywordtype">int</span> reg, <span class="keywordtype">int</span> value);</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;  <span class="keywordtype">int</span> readReg(<span class="keywordtype">int</span> reg);</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;  <span class="keywordtype">bool</span> tick(<span class="keywordtype">int</span> cycles);</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;  <span class="comment">// set/get &quot;external&quot; state of PA</span></div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;  uint8_t PA()                       { <span class="keywordflow">return</span> m_PA; }</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;  <span class="keywordtype">void</span> setPA(<span class="keywordtype">int</span> value);</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;  <span class="keywordtype">void</span> setBitPA(<span class="keywordtype">int</span> bit, <span class="keywordtype">bool</span> value);</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;  <span class="keywordtype">void</span> openBitPA(<span class="keywordtype">int</span> bit);</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;  <span class="comment">// set/get &quot;external&quot; state of PB</span></div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;  uint8_t PB()                       { <span class="keywordflow">return</span> m_PB; }</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;  <span class="keywordtype">void</span> setPB(<span class="keywordtype">int</span> value);</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;  <span class="keywordtype">void</span> setBitPB(<span class="keywordtype">int</span> bit, <span class="keywordtype">bool</span> value);</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;  <span class="keywordtype">void</span> openBitPB(<span class="keywordtype">int</span> bit);</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;  uint8_t CA1()                      { <span class="keywordflow">return</span> m_CA1; }</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;  <span class="keywordtype">void</span> setCA1(<span class="keywordtype">int</span> value)             { m_CA1_prev = m_CA1; m_CA1 = value; }</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;  uint8_t CA2()                      { <span class="keywordflow">return</span> m_CA2; }</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;  <span class="keywordtype">void</span> setCA2(<span class="keywordtype">int</span> value)             { m_CA2_prev = m_CA2; m_CA2 = value; }</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;  uint8_t CB1()                      { <span class="keywordflow">return</span> m_CB1; }</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;  <span class="keywordtype">void</span> setCB1(<span class="keywordtype">int</span> value)             { m_CB1_prev = m_CB1; m_CB1 = value; }</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;  uint8_t CB2()                      { <span class="keywordflow">return</span> m_CB2; }</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;  <span class="keywordtype">void</span> setCB2(<span class="keywordtype">int</span> value)             { m_CB2_prev = m_CB2; m_CB2 = value; }</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;  uint8_t DDRA()                     { <span class="keywordflow">return</span> m_DDRA; }</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;  uint8_t DDRB()                     { <span class="keywordflow">return</span> m_DDRB; }</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;  uint8_t tag()                      { <span class="keywordflow">return</span> m_tag; }</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;  uint8_t       m_tag;</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;  <span class="comment">// timers</span></div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;  <span class="keywordtype">int</span>           m_timer1Counter;</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;  uint16_t      m_timer1Latch;</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;  <span class="keywordtype">int</span>           m_timer2Counter;</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;  uint8_t       m_timer2Latch;     <span class="comment">// timer 2 latch is 8 bits</span></div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;  <span class="keywordtype">bool</span>          m_timer1Triggered;</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;  <span class="keywordtype">bool</span>          m_timer2Triggered;</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;  <span class="comment">// CA1, CA2</span></div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;  uint8_t       m_CA1;</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;  uint8_t       m_CA1_prev;</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;  uint8_t       m_CA2;</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;  uint8_t       m_CA2_prev;</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;  <span class="comment">// CB1, CB2</span></div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;  uint8_t       m_CB1;</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;  uint8_t       m_CB1_prev;</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;  uint8_t       m_CB2;</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;  uint8_t       m_CB2_prev;</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;  <span class="comment">// PA, PB</span></div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;  uint8_t       m_DDRA;</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;  uint8_t       m_DDRB;</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;  uint8_t       m_PA;     <span class="comment">// what actually there is out of 6522 port A</span></div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;  uint8_t       m_PB;     <span class="comment">// what actually there is out of 6522 port B</span></div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;  uint8_t       m_IRA;    <span class="comment">// input register A</span></div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;  uint8_t       m_IRB;    <span class="comment">// input register B</span></div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;  uint8_t       m_ORA;    <span class="comment">// output register A</span></div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;  uint8_t       m_ORB;    <span class="comment">// output register B</span></div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;  uint8_t       m_IFR;</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;  uint8_t       m_IER;</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;  uint8_t       m_ACR;</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;  uint8_t       m_PCR;</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;  uint8_t       m_SR;</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;  <span class="comment">// callbacks</span></div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;  <span class="keywordtype">void</span> *             m_context;</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;  PortInputCallback  m_portIn;       <span class="comment">// input callback</span></div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;  PortOutputCallback m_portOut;      <span class="comment">// output callback</span></div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;<span class="preprocessor">  #if DEBUG6522</span></div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;  <span class="keywordtype">int</span>           m_tick;</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;<span class="preprocessor">  #endif</span></div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;};</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;};  <span class="comment">// namespace fabgl</span></div><div class="ttc" id="group___enumerations_ga69838990f93c3301289776790e4fc0e0_html_gga69838990f93c3301289776790e4fc0e0a3702f3bfbd91df0d6105cbd8b8d8b963"><div class="ttname"><a href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#gga69838990f93c3301289776790e4fc0e0a3702f3bfbd91df0d6105cbd8b8d8b963">fabgl::VIA6522Port::CA2</a></div></div>
<div class="ttc" id="group___enumerations_ga69838990f93c3301289776790e4fc0e0_html_gga69838990f93c3301289776790e4fc0e0ac479bbda96996453098aaa0687a9197e"><div class="ttname"><a href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#gga69838990f93c3301289776790e4fc0e0ac479bbda96996453098aaa0687a9197e">fabgl::VIA6522Port::CB1</a></div></div>
<div class="ttc" id="group___enumerations_ga69838990f93c3301289776790e4fc0e0_html_gga69838990f93c3301289776790e4fc0e0a96d495d6079a5d50e1b6bc3fc9255f09"><div class="ttname"><a href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#gga69838990f93c3301289776790e4fc0e0a96d495d6079a5d50e1b6bc3fc9255f09">fabgl::VIA6522Port::CB2</a></div></div>
<div class="ttc" id="group___enumerations_ga69838990f93c3301289776790e4fc0e0_html_gga69838990f93c3301289776790e4fc0e0acd203ccd68b84de1c5df8fd890e104e0"><div class="ttname"><a href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#gga69838990f93c3301289776790e4fc0e0acd203ccd68b84de1c5df8fd890e104e0">fabgl::VIA6522Port::PB</a></div></div>
<div class="ttc" id="namespacefabgl_html"><div class="ttname"><a href="namespacefabgl.html">fabgl</a></div><div class="ttdef"><b>Definition:</b> <a href="canvas_8cpp_source.html#l00036">canvas.cpp:36</a></div></div>
<div class="ttc" id="fabgl_8h_html"><div class="ttname"><a href="fabgl_8h.html">fabgl.h</a></div><div class="ttdoc">This file is the all in one include file. Application can just include this file to use FabGL library...</div></div>
<div class="ttc" id="group___enumerations_ga69838990f93c3301289776790e4fc0e0_html_gga69838990f93c3301289776790e4fc0e0ac93bf9a243a391a65da5b60116ee9a5c"><div class="ttname"><a href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#gga69838990f93c3301289776790e4fc0e0ac93bf9a243a391a65da5b60116ee9a5c">fabgl::VIA6522Port::CA1</a></div></div>
<div class="ttc" id="group___enumerations_ga69838990f93c3301289776790e4fc0e0_html_gga69838990f93c3301289776790e4fc0e0a06f6a489209115c5cef3f45036aad3ec"><div class="ttname"><a href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#gga69838990f93c3301289776790e4fc0e0a06f6a489209115c5cef3f45036aad3ec">fabgl::VIA6522Port::PA</a></div></div>
<div class="ttc" id="group___enumerations_ga69838990f93c3301289776790e4fc0e0_html_ga69838990f93c3301289776790e4fc0e0"><div class="ttname"><a href="group___enumerations_ga69838990f93c3301289776790e4fc0e0.html#ga69838990f93c3301289776790e4fc0e0">fabgl::VIA6522Port</a></div><div class="ttdeci">VIA6522Port</div><div class="ttdoc">I/O port. </div><div class="ttdef"><b>Definition:</b> <a href="_v_i_a6522_8h_source.html#l00091">VIA6522.h:91</a></div></div>
<div class="ttc" id="classfabgl_1_1_v_i_a6522_html"><div class="ttname"><a href="classfabgl_1_1_v_i_a6522.html">fabgl::VIA6522</a></div><div class="ttdoc">VIA 6522 emulator. </div><div class="ttdef"><b>Definition:</b> <a href="_v_i_a6522_8h_source.html#l00109">VIA6522.h:109</a></div></div>
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